Segmented ladder construction

Details Segmented ladder construction Segmented ladder construction

1989-06-12

1990-04-17

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Kit or separable parts

182178, 182219, 182228, E06C 110

Patent

active

049172166

ABSTRACT:
A construction unit for assembling into a ladder like assembly wherein the unit is provided with parallel and opposed side rails joined by at least one cross-member, the ends of the side rails being adapted for end to end telescopic joining into a multi-unit assembly, the side rails of the units being hollowed to accept, internally thereof, elongated reenforcing and retaining members which may be threaded through all the side rails, in sequence, of an assembly of units.

REFERENCES:
patent: 1363418 (1920-12-01), Jacobs
patent: 1422654 (1922-11-01), Bilger et al.
patent: 2900041 (1959-08-01), Leavitt et al.
patent: 2993561 (1961-07-01), Watson
patent: 3871481 (1975-03-01), Ballek
patent: 3997027 (1976-12-01), Patterson
patent: 4060150 (1977-11-01), Hughes
patent: 4086980 (1978-05-01), Shortes
patent: 4215766 (1980-08-01), Littlefield
patent: 4228872 (1980-10-01), Treitz

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